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I had updated from 607adf00b5-240915.
Does this situation have any implications for battery life? That is, does the 6g now actually power-down when shut down, or does the drive continue to drain battery power even when the device is turned off?
I have the impression that the flash adaptors' problems with power-management commands maybe mean they never fully turn off (so batteries will drain while the things are out-of-use)? Or is it only an issue with respect to the drive powering down between accesses while the device itself is in use?
[As I have several flash-modded ipods, and some of them sit unused for longish periods, I'm a bit bothered at the implications for battery life...though I guess the fault likes with the adaptors themselves rather than being anything RB can do much about]
Quote from: Frankenpod on October 23, 2024, 09:54:01 AMDoes this situation have any implications for battery life? That is, does the 6g now actually power-down when shut down, or does the drive continue to drain battery power even when the device is turned off?These two changes have no implications for battery live beyond that 20s of additional runtime. Quote from: Frankenpod on October 23, 2024, 09:54:01 AM I have the impression that the flash adaptors' problems with power-management commands maybe mean they never fully turn off (so batteries will drain while the things are out-of-use)? Or is it only an issue with respect to the drive powering down between accesses while the device itself is in use?The latter. When the device is "turned off" all power supplies and regulators are switched off, this includes the storage device.Quote from: Frankenpod on October 23, 2024, 09:54:01 AM[As I have several flash-modded ipods, and some of them sit unused for longish periods, I'm a bit bothered at the implications for battery life...though I guess the fault likes with the adaptors themselves rather than being anything RB can do much about]The problems are due to not properly implementing the ATA power management commands (first defined by ATA-3 in 1997, mandatory since ATA-4 in 1998) -- When issued the STANDBY IMMEDIATE command to put the device to sleep (which includes an implicit flush operation) it no longer responds to _anything_, requiring a full power cycle to get it going again. They also claim to not support the FLUSH CACHE command (introduced in ATA-4, mandatory since ATA-5 in 2000, capability flag added in ATA-6 in 2002. These devices claim to be ATA-8 devices) so we can't ever be sure when it's safe to kill power.It also turns out these SD adapters don't properly implement LBA48 (ATA-6) -- they claim to, but truncate sector addresses to only 32 bits which limits total capacity to 2TiB.tl;dr: Use a SATA adapter intstead of an SD adapter. They are fast, reliable, and implement proper power management.
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